A.O. Smith CAHP-MC-38 Installation, Operation And Maintenance Instructions page 39

OVERHEAT OFF TEMP
SENSOR COMPENSATION
HP QTY SETTING
CIR PUMP PRE ON
CIR PUMP DELAY OFF
Menu Description
： ： ： ：
Menu Item
OVERHEAT OFF TEMP-*
SENSOR COMPENSATION-*
HP QTY SETTING-*
CIR PUMP PRE ON-*
CIR PUMP DELAY OFF-*
MEMORY FUNCTION-*
TANK TEMP DIFF-*
MAINTENANCE SETTING
MODIFY
Picture 6.10 Maintenance Setting Interface
Maintenance Setting Menu
OVERHEAT OFF TEMP is the parameter which is set to stop the heating process if the tank
temperature exceeded the setpoint.
Setting Range: 60~80℃
Default Value: 75
SENSOR COMPENSATION is the parameter which is set to adjust the tank temperature
sensor reading if an obviouse deviation is found on the measurement.
Setting Range: -3~3 ℃
Default Value: 0
HP QTY SETTING should be set based on the actual quantity of the heat pump units, which
are controlled by the same central cotroller in one system.
Setting Range: 1~8
Default Value: 2
CIR PUMP PRE ON is the parameter which is set to determine how long the circulation
pump should operate prior to the heat pump starts, to make sure evey heat pump unit
have sufficient water flow during the operation period.
Setting Range: 4~500 Seconds
Default Value: 70
CIR PUMP DELAY OFF is reserved for unpressurized tank system and it could not be set for
pressurized tank system.
MEMORY FUNCTION could be set as ON or OFF, which indicate whether the controller
would remember the settings during the power off period. If it is set as ON, the controller
will use the previouse setting after the power on. Otherwise, the controller will use the
default settings.
Setting Options: ON, OFF
Default Option: ON
TANK TEMP DIFF is the parameter for heating process control. If the control temperature
is lower than the set temperature minus the TANK TEMP DIFF, the controller will active the
heating system and start the heating process.
Setting Range: 2~5℃
Default Value: 2
75℃
0℃
30s
15min
BACK HELP
Description
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